You see the home screen when you turn on and unlock your phone or touch
.
Swipe right or left to move between home screens.

up from the bottom of the screen to see the list of all your apps. Navigation:
takes you back one screen.
returns you to the home screen from any app.
lets you switch between recent apps. Touch to see a list of recent apps. Touch twice to switch between your two most recent apps. Touch & hold to use split screen.
lets you zoom in/out if you have visual impairments. Appears after you enable accessibility settings.
When the phone is in Battery Saver mode, the battery icon in the status bar turns orange.
You can add more home screens to the right. To add a page, drag an app shortcut or widget to the edge of an existing page and place it on the new screen.
To remove a home screen, drag all apps, shortcuts, widgets, and folders off the screen. After you remove the last item, the home screen will be removed.
Organize it:
Change how it looks: